EOD Mobile Unit 12 SCUBA Dive Supervisor Questions
What are the symptoms of an AGE?
1) Immediate onset of altered consciousness 2) Dizziness 3) Paralysis or weakness in extremities 4) Large areas of abnormal sensation, 5) Vision abnormalities 6) Convulsions or personality change Additional symptoms: 1) Extreme Fatigue 2) Difficulty in thinking 3) Vertigo 4) Nausea and/or vomiting 5) Hearing abnormalities 6) Bloody sputum 7) Loss on control of bodily functions 8) Tremors 9) Loss of coordination 10) Numbness 17-3.1.1
What are the minimum manning levels for recompression treatments?
Minimum: 3 (Chamber Supervisor, Inside Tender/DMT, Outside Tender) Ideal: 7 (Diving Officer, Master Diver, Chamber Supervisor, UMO, Inside Tender/DMT, Log keeper, Outside Tender) Emergency: 2 (Chamber Supervisor, Inside Tender/DMT) Table 17-1
What is the minimum manning requirements?
Single Diver: 4 (Diver, Standby, Supervisor, Tender) Buddy Pair: 4 (2 Divers, Standby, Supervisor) Figure 7-3
What is Subcutaneous Emphysema and when does it occur?
Subcutaneous emphysema occurs when that gas subsequently migrates into the subcutaneous tissues of the neck 3-8.2
What table is the rules for recompression treatment?
Table 17-2
What is the chart for altitude diving? Any special rules/exceptions?
Table 9-4 Depth Corrections No correction for dives conducted between sea level and 300ft 300ft-1000ft altitude requires correction for dives deeper than 145fsw (actual depth) All dives require correction if greater than 1000ft altitude
Describe cutaneous (Skin) symptoms of Type 1 DCS
The most common skin manifestation of decompression sickness is itching. Itching by itself is generally transient and does not require recompression. Mottling or marbling of the skin, known as cutis marmorata (marbling), may precede a symptom of serious decompression sickness and shall be treated by recompression as Type II decompression sickness. This condition starts as intense itching, progresses to redness, and then gives way to a patchy, dark-bluish discoloration of the skin. 17-4.2.2
What is the Outside Tender responsible for?
The outside tender is responsible for preparing the chamber for use and securing from use IAW the system operating procedures. He pressurizes and ventilates the chamber at the required rates. He operates the chamber medical lock, maintains the chamber at required depth, and monitors chamber internal environmental readings, treatment gas banks, and air supply manifold pressures. 17-2.7
How does one treat an AGE?
Treated in accordance with Figure 17-1 with initial compression to 60 fsw. If symptoms are improved within the first oxygen breathing period, then treatment is continued using Treatment Table 6. If symptoms are unchanged or worsen, assess the patient upon descent and compress to depth of relief, not to exceed 165 fsw. 1) Basic first aid 2) 100% Oxygen 3) Immediate Recompression (Treatment Table 6) 17-3.2, 3‑8.1.3
How does temperature affect how you on/off gas?
Warm temperature leads to quicker on/off gassing but there is a greater risk of DCS in No Decompression zone. Cold temperature leads to slower off-casing during D dives 3-10
What setup is required for ice diving?
- Full Face Mask Recommended - Redundant air sources 1) 2 Single SCUBA bottles with individual K or J valve and first stage 2) Twin SCUBA bottles with dual outlet common manifold containing two separate 1st stage 3) Surface supplied with diver worn SCUBA
What is the grading scale for neurological extremity strength?
0 - Paralysis 1 - Flicker or trace of contraction 2 - Cannot overcome gravity 3 - Overcome gravity but not examiner 4 - Able to resist slight force from examiner 5 - Equal strength + can resist examiner 5A-3.4.1
What are the requirements for lapses in dive currency? Who can approve?
1 Year: PST, CO approval 3 Years: PST, CO approval, and various diving related trainings from manual (Dive Physics, etc) 6 Years: Formal request to dive school for reinstatement from CO, but it is not his call
What do you do if a person is having a near drowning?
1) Airway, Breathing, Circulation 2) Roll on side to prevent swallowing vomit 3) Provide O2 4) CPR if needed 5) AED 6) Transport to higher medical care facility
What are some causes for mediastinal and subcutaneous emphysema?
1) Breath holding during ascent 2) Positive pressure breathing such as ditch and don exercises 3) Drown proofing exercises 4) Cough during surface swimming 3‑8.2.1
What are the primary objectives of recompression treatment?
1) Compress gas bubbles to a small volume, thus relieving local pressure and restarting blood flow. 2) Allow sufficient time for bubble resorption. 3) Increase blood oxygen content and thus oxygen delivery to injured tissues. 17-5.1
What is a hazard or near mishap that must be reported in regards to SCUBA?
1) Execution of EP 2) Exceeded prescribed limits 3) Any abnormal equipment conditions that could lead to injury 4) Any external systems, equipment, or conditions that may affect diver safety Example: Tags cleared without proper authority OPNAVINST 3150.27D (24AUG21)
What are the Unconscious Diver Immediate Actions?
1) Head up to open airway 2) 5 Rescue breaths on surface -1 Breath every 6 Seconds if possible 3) CPR 4) AED if no pulse
What are the symptoms of Type 1 DCS?
1) Joint pain (musculoskeletal or pain only symptoms) 2) Symptoms involving the skin (cutaneous) 3) Swelling and pain in lymph nodes -Joint pain is usually located in the shoulder, elbow, wrist, hand, knee, and ankle -Usually described as a deep, dull ache. Pain occurring in the abdominal and thoracic areas, including the hips, should be treated as Type II DCS 17-4.2, 17-4.2.1
What are the disadvantages of SCUBA?
1) Limited Endurance (depth and duration) 2) Limited Physical Protection 3) Influenced by Current 4) Lack of Voice Communication Figure 7-2
What EPs must be briefed every time during dive brief?
1) Loss of Air 2) Lost Diver 3) Trapped Diver 4) Unconscious Diver
What are the parts of a neurological examination?
1) Mental Status 2) Coordination 3) Motor Skills 4) Cranial Nerves 5) Sensory Deprivation 6) Deep Tendon Reflexes 5A-3
When is a small craft mandatory?
1) Open ocean diving 2) Diving off a large platform 3) When diver is untended or may be displaced from dive side Figure 7-2
What are the advantages of SCUBA?
1) Portability 2) Rapid Deployment 3) Minimum Support Requirements 4) Horizontal/Vertical Mobility 5) Minimum Bottom Disturbances Figure 7-2
What are some things the Inside Tender is responsible for?
1) Releasing the door latches (dogs) after a seal is made 2) Communicating with outside personnel 3) Providing first aid to patient 4) Monitoring the patient's vital signs 5) Administering treatment gas to the patient at treatment depth 6) Monitoring patient for signs of O2 Toxicity 7) Ensuring that sound attenuators for ear protection are worn during compression and ventilation portions of recompression treatments 8) Ensuring that the patient is lying down and positioned to permit free blood circulation to all extremities 17-2.6
What things do you need to have completed to dive at MU12
1) Sailing List 2) DRA (Deliberate Risk Assessment) 3) Control # 4) Predives
What to do if diving at Whiskey 50?
1) Schedule through N7 department 2) Emergency Vehicle at Rudee's Inlet
When do you set/check over bottom pressures? What is it for the Poseidon's?
1) Start of each new mission 2) During each pre-dive 125 +- 5
What is the general rule to distinguish between DCS and an AGE?
10 Minute time period AGE occurs within 10 minutes while DCS occur after 10 minutes 17-4.4.4
How long must a diver wait before diving again in warm water?
12 Hour wait. Must also be rehydrated in a cool environment 2C-1
What is the descent rate of all treatment tables?
20 feet per minute 17-5.3.1
How often should diver notifications be made by ship?
30 Minutes Code alpha hoisted
Rate of Ascent
30ft/min +-10 Minor variations in the rate of ascent between 20 and 40 fsw/min are acceptable. For surface decompression, the ascent rate from the 40 fsw water stop to the surface is 40 fsw/min. 7-9.1, 9-6.3
At what temperatures does cold water / ice diving occur?
37 Degrees F or lower 2C-1
How does one acclimate to warm water diving? De-acclimate?
5 Consecutive days of acclimatization -Short Exposure + Light Workoads - Benefits begin to disappear in 3-5 days after stopping exposure to warm water diving 3-10.4.4
What is the size of an ice diving side setup?
60' Diameter Worksite Figure 11-4
Rate of Descent
75ft/min 7-7.4
What are the times/temperatures associated with warm water diving?
88-94 Degrees: limited by air supply and diver comfort 94-97 Degrees: 3 Hours 97-99 Degrees: 1 Hour Per 12 Hour Period 2C-1
What is the initial ascent to altitude repet group table
9-5
What is the No Decompression Dive Table?
9-7
What is the RNT Table?
9-8
What do you do if your surface interval is > 10 Minutes? < 10 Minutes?
> 10 Minutes: Start a new dive < 10 Minutes: Combine the two dives bottom times, calculate repet group using deepest depth
What is Decompression Sickness?
A diver's blood and tissues absorb additional nitrogen (or helium) from the lungs when at depth. If a diver ascends too fast this excess gas will separate from solution and form bubbles. These bubbles produce mechanical and biochemical effects that lead to a condition known as decompression sickness 3-9.3
What are some symptoms for mediastinal and subcutaneous emphysema?
Mediastinal: In more severe cases, the diver may experience mild to moderate pain under the breastbone, often described as dull ache or feeling of tightness. The pain may radiate to the shoulder or back and may increase upon deep inspiration, coughing, or swallowing Subcutaneous: The diver may have a feeling of fullness around the neck and may have difficulty in swallowing. His voice may change in pitch. An observer may note a swelling or apparent inflation of the diver's neck. Movement of the skin near the windpipe or about the collar bone may produce a cracking or crunching sound (crepitation) 3‑8.2.2
Can you perform CPR at depth in a recompression chamber? What about an AED?
CPR: Yes AED: No 17-3.3
What are the causes, symptoms, and treatment for an Inner Ear Barotrauma?
Cause: Inability to clear, improper clearing Symptoms: Persistant vertigo and hearing loss Treatment: Refer to an Ear Nose Throat (ENT) physician
Describe CNS O2 Toxicity, its causes, symptoms, and treatments
Central Nervous System (CNS) O2 Toxicity can occur whenever the oxygen partial pressure exceeds 1.3ATA in a wet diver or 2.4ATA in a dry diver. Symptoms: VENTID-C Visual symptoms Ears Ringing or Roaring Nausea (Vomiting) Twitching or Tingling Irritability Dizziness Convulsions Treatments: Ascend, Shift to a breathing mixture with a lower percent oxygen, put in recompression chamber, remove mask 3‑9.2.2
Any decompression sickness that occurs must be treated by what?
Recompression 17-4, 3‑9.3.6
What table and information do you need to determine surface interval before flying?
Table 9-6 1) One must know the repet designator (highest in the last 24 Hours 2) Altitude gained (commercial flights pressurized to 8000ft)
What is Charles/Gay-Lussac's Law and what is the equation?
Charles'/Gay-Lussac's law states that at a constant pressure, the volume of a gas is directly proportional to the change in the absolute temperature V1/T1 = V2/T2 2-11.2
What is the difference between a J valve and a K valve?
Cylinder valves that employ a built in air reserve mechanism (J valve) are preferred over valves without a reserve mechanism (K-valves) when diving in zero visibility where a gauge may not be able to be read because the J-valve will provide a warning that air is low. 7-3.1.2.4
What is hypoxia and what are the causes, symptoms and treatment?
Deficiency of O2 in the arterial blood. PPO2 of .16ATA -.11ATA Helplessness -.10ATA Unconsciousness Causes: Breath Holding, Collapse of Lung, Pulmonary Edema, CO Poisoning. Symptoms: Loss of Judgement, Lack of Concentration/Coordination, Weakness, Drowsiness, Agitation, Euphoria, Inability to perform delicate tasks, and Loss of Consciousness Treatment: 100% O2 3-5.1, 3‐5.1.1, 3‐5.1.2, 3‐5.1.3
Who provides our ice diving gear?
Dive Locker - Poseidon cold water kit - Twin tanks with 2 separate 1st and 2nd stage regulators ESU - will supply footprint from Chapter 11
If you are diving in a new area how would you find a recompression chamber?
Divers Alert Network
What is the EOD Mobile Unit 12 Diving Instruction?
EODMUTWELVEINST 3150.1
When should the UMO be contacted when dealing with recompression?
Earliest time possible but MUST be contacted before any patient release from the treatment facility He should also be consulted before committing a patient to a Treatment Table 4 or 7 17-2.4, 17-2.5
What are the sizes and shapes of holes for entry and exit while ice diving?
Entry: 6'x3' rectangle or 6' sided triangle Escape: Downstream escape hole. 3'x3' square, 3' sided triangle, 3' diameter circle 11-3.4, 11-3.5
What do you do if there is a delay when arriving to the first decompression stop?
First Stop: < 1 Min: Ignore > 1 Min: DEEPER than 50', round up to next whole minute, add to bottom time, re-complete table + schedule. If a change in schedule is required and the new schedule calls for a decompression stop deeper than the diver's current depth, perform any missed deeper stops at the diver's current depth. Do not go deeper. > 1 Min: SHALLOWER than 50', round up to next whole minute, add delay time to first stop Between or Leaving stops - SHALLOWER than 50', ignore delay, resume schedule upon completion of delay 9-11.3
What is Hypercapnia, its symptoms and treatments?
Hypercapnia is an abnormally high level of carbon dioxide in the blood and body tissues. Causes: CO2 Retention, Overworking, Over breathing the Rig, and Skip Breathing Symptoms: Shortness of Breath, increased breathing rate, increased sweating, drowsiness, headache, loss of consciousness, convulsions Symptoms of hypercapnia usually become apparent when divers attempt heavy work at depths deeper then 120 FSW on air or deeper than 850 FSW on heliumoxygen Treatment: Reduce work rate, 100% O2 3-5.2, 3‐5.2.1
What is Hyperthermia, its symptoms and treatments?
Hyperthermia is the rising of the core temperature. Symptoms include fatigue, cramps, nausea, sweating, headache, stop sweating, and heat stroke. Treatments include cooling by hosing down/fanning. Ice packs but do not fully immerse in cold water. 3-10.4
What is hypothermia?
Hypothermia is excessive heat loss and the lowering of the core temperature of the body. Symptoms: In mild cases, the victim will experience uncontrolled shivering, slurred speech, imbalance, and/or poor judgment. Severe cases of hypothermia are characterized by loss of shivering, impaired mental status, irregular heartbeat, and/or very shallow pulse or respirations. This is a medical emergency. The signs and symptoms of falling core temperature are given in Table 31, though individual responses to falling core temperature will vary. At extremely low temperatures or with prolonged immersion, body heat loss reaches a point at which death occurs. Treatments: Mild Symptoms use Active Rewarming 1) Remove all wet clothing 2) Wrap victim in a blanket (preferably wool). 3) Place in an area protected from wind 4) If possible, place in a warm area (i.e. galley). Severe Symptoms use Passive Rewarming 1) Warm shower or bath 2) Place in a very warm space (i.e., engine room). 3‑10.2.1
Treatment for Symptomatic Omitted Decompression
If a diver has had an uncontrolled ascent and has any symptoms, he should be compressed immediately in a recompression chamber to 60 fsw. Conduct a rapid assessment of the patient and treat accordingly. Treatment Table 5 is not an appropriate treatment for symptomatic omitted decompression. If the diver surfaced from 50 fsw or shallower, compress to 60 fsw and begin Treatment Table 6. If the diver surfaced from a greater depth, compress to 60 fsw or the depth where the symptoms are significantly improved, not to exceed 165 fsw, and begin Treatment Table 6A. Consultation with a Undersea Medical Officer should be obtained as soon as possible. For uncontrolled ascent deeper than 165 feet, the diving supervisor may elect to use Treatment Table 8 at the depth of relief, not to exceed 225 fsw. 17-4.7
What to do with a diver with no pulse or respirations?
Immediate CPR and application of an Automated External Defibrillator (AED) Transport to higher medical care prior to recompression even if pulseless diver regains vital signs 17-3.3
What is mediastinal emphysema and when does it occur?
Mediastinal emphysema, also called pneumomediastinum, occurs when gas is forced through torn lung tissue into the loose mediastinal tissues in the middle of the chest surrounding the heart, the trachea, and the major blood vessels. Mediastinal emphysema is a pre-requisite for subcutaneous emphysema 3-8.2
What is the General Gas Law and the equation?
The General Gas Law states that temperature, volume, and pressure affect a gas in such a way that a change in one factor must be balanced by corresponding change in one or both of the others P1V1/T1 = P2V2/T2 2-11.3
Who is the most qualified person to supervise recompression treatments?
The Master Diver 17-2.3
Who is the only recompression team member who can modify recompression treatment tables, with concurrence of the CO or OIC?
The UMO 17-2.5
What is Henry's Law?
The amount of any given gas that will dissolve in a liquid at a given temperature is directly proportional to the partial pressure of that gas For example; Because a large percentage of the human body is water, the law simply states that as one dives deeper and deeper, more gas will dissolve in the body tissues and that upon ascent, the dissolved gas must be released. 2-12.6
Describe the cause, symptoms, and treatment of Carbon Monoxide (CO) poisoning
The body produces carbon monoxide as a part of the process of normal metabolism. Consequently, there is always a small amount of carbon monoxide present in the blood and tissues. Carbon monoxide poisoning occurs when levels of carbon monoxide in the blood and tissues rise above these normal values due to the presence of carbon monoxide in the diver's gas supply. Carbon monoxide not only blocks hemoglobin's ability to delivery oxygen to the cells, causing cellular hypoxia, but also poisons cellular metabolism directly Concentrations as low as 0.002 ata (2,000 ppm, or 0.2%) can prove fatal. Symptoms: Tightness across the forehead, nausea, dizziness, vomiting, headache, confusion, unconsciousness Treatment: 100% O2, Fresh Air, Recompression Treatment Table 6 3-5.8
Describe Inner Ear Symptoms (Staggers) of Type II DCS
The symptoms of inner ear decompression sickness include: tinnitus (ringing in the ears), hearing loss, vertigo, dizziness, nausea, and vomiting. Inner ear decompression sickness has occurred most often in helium-oxygen diving and during decompression when the diver switched from breathing helium-oxygen to air. The "Staggers" has been used as another name for inner ear decompression sickness because of the afflicted diver's difficulty in walking due to vestibular system dysfunction. 17-4.4.2
What is Dalton's Law?
The total pressure exerted by a mixture of gases is equal to the sum of the pressures of each of the different gases making up the mixture, with each gas acting as if it alone was present and occupied the total volume Composition of Air 78% Nitrogen 21% Oxygen 1% Other 2-12.1
What is special about using Life Preservers when ice diving?
The use of life preservers with CO2 actuation is prohibited only when diving under ice. The accidental inflation of a life preserver will force the diver upward and may cause a collision with the undersurface of the ice
What are some treatments for mediastinal and subcutaneous emphysema?
Treatment of mediastinal or subcutaneous emphysema with mild symptoms consists of breathing 100 percent oxygen at the surface. If symptoms are severe, shallow recompression may be beneficial. Recompression is performed with the diver breathing 100 percent oxygen and using the shallowest depth of relief (usually 5 or 10 feet). An hour of breathing oxygen should be sufficient for resolution, but longer stays may be necessary 3‑8.2.3
What are the hydration requirements for warm water diving? What are the over-hydration risks?
Two hours prior to diving one must drink 500mL -excess may cause pulmonary edema Water or electrolyte beverage post diving Rule of Thumb - 500mL for each hour diving 2C-1
Describe the treatment of Type 1 DCS?
Type I Decompression Sickness is treated in accordance with Figure 17-2. If a full neurological exam is not completed before initial recompression, treat as Type II DCS. Symptoms of musculoskeletal pain that have shown absolutely no change after the second oxygen breathing period at 60 feet may be due to orthopedic injury rather than decompression sickness. If, after reviewing the patient's history, the Undersea Medical Officer feels that the pain can be related to specific orthopedic trauma or injury, a Treatment Table 5 may be completed. If a Undersea Medical Officer is not consulted, Treatment Table 6 shall be used. 17-4.3
Treatment of Type II DCS?
Type II Decompression Sickness is treated with initial compression to 60 fsw in accordance with Figure 17-1. If symptoms are improved within the first oxygen breathing period, then treatment is continued on a Treatment Table 6. If severe symptoms (e.g. paralysis, major weakness, memory loss, altered consciousness) are unchanged or worsen withinthe first 20 minutes at 60 fsw, assess the patient during descent and compress to depth of relief (or significant improvement), not to exceed to 165 fsw. Treat on Treatment Table 6A. 17-4.5
Symptoms of Type II Decompression Sickness
Type II, or serious, symptoms are divided into three categories: neurological, inner ear (staggers), and cardiopulmonary (chokes). Type I symptoms may or may not be present at the same time. 17-4.4
How can one qualify as an Inside Tender?
via the Military Diver Inside Tender PQS (NAVEDTRA 43910) 17-2.6
How do you mark lines?
Black or Yellow band every 10 feet Red band every 50 feet 15-3.2.6
What is Boyle's Law and what is the equation?
Boyle's law states that at constant temperature, the absolute pressure and the volume of gas are inversely proportional Boyle's law can also be expressed as: P1V1 = P2V2 2-11.1
How often should an Inside Tender/DMT be inside the chamber?
At all times 17-2.6
What is a pneumothorax, causes, symptoms, and treatments?
A pneumothorax is air trapped in the pleural space between the lung and the chest wall Cause: A pneumothorax occurs when the lung surface ruptures and air spills into the space between the lung and chest wall. Lung rupture can result from a severe blow to the chest or from overpressurization of the lung. Simple: a simple pneumothorax, a one-time leakage of air from the lung into the chest partially collapses the lung, causing varying degrees of respiratory distress Tension: the damaged lung may allow air to enter but not exit the pleural space. Successive breathing gradually enlarges the air pocket. This is called a tension pneumothorax because of the progressively increasing tension or pressure exerted on the lung and heart by the expanding gas. Symptoms of Pneumothorax. The onset of a simple pneumothorax is accompanied by a sudden, sharp chest pain, followed by shortness of breath, labored breathing, rapid heart rate, a weak pulse, and anxiety. The symptoms of tension pneumothorax are similar to simple pneumothorax, but become progressively more intense over time. Treatment: 100% Oxygen, Neurological exam to rule out DCS and AGE. Needle D if patient has difficulty breathing. Recompress if Neuro cannot be done due to not being able to rule out DCS and AGE. If DCS and AGE can be ruled out then transport to nearest medical facility. 3-8.3, 17-4.4.3
What is the difference between AGE and DCS onset?
AGE: occur within 10 minutes DCS: 42% occur within 1 hour 98% occur within 24 hours 17-4.1
What is an "AIG" and "TIP"?
AIG: Address Indicator Group TIP: Technical Issuance Paper
What are the Mishap Reportable Incidents?
Any class A, B, C, D mishap A) Restricted work B) Limited Duty C) Light Duty D) Recompression Treatment E) Loss of Conciousness Type I/II DCS POIS CNS or Pulmonary O2 Toxicity OPNAVINST 3150.27D (24AUG21)
How long does equilibrium at altitude take? What happens if not?
Approximately twelve hours at altitude is required for equilibration. A longer period is required for full acclimatization. If a diver begins a dive at altitude within 12 hours of arrival, the residual nitrogen left over from sea level must be taken into account using Table 9-5 9-13.4
List all POISes
Arterial Gas Embolism (AGE) Mediastinal Emphysema Subcutaneous Emphysema Pneuomothorax -Simple and Tension 3-8
What is an AGE and when can it occur?
Arterial gas embolism is caused by entry of gas bubbles into the arterial circulation as a result of pulmonary over inflation syndrome (POIS) It can occur during any dive where compressed gas is breathed under pressure no matter the depth Exhaustion of air supply and the need for an emergency ascent is the most common cause of AGE 17-3, 3-8.1
Diagnosis of AGE?
As a basic rule, any diver who has obtained a breath of compressed gas from any source at any depth, whether from diving apparatus or from a diving bell, and who surfaces unconscious, loses consciousness, or has any obvious neurological symptoms within 10 minutes of reaching the surface, must be assumed to be suffering from an AGE 17-3.1
What is important information regarding contaminated water diving?
Medical personnel should be consulted when planning for diving in contaminated water to ensure proper precautions are taken and post-dive monitoring of divers is conducted. When planning for operations in contaminated waters, personnel protective equipment (PPE) and appropriate preventative medical procedures shall be taken. Diving equipment shall be selected that gives the diver maximum protection consistent with the risk. Resources and technical advice for dealing with contaminated water diving conditions are available in the Guidance for Diving in Contaminated Waters, SS521-AJ-PRO-010, and from NAVSEA 00C3. 2C-1
Line Pull Table
Memorize entire table from Dive Manual
What is Nitrogen Narcosis and what are the symptoms and treatments?
Nitrogen Narcosis is the narcotic effect of Nitrogen at high pressures. Symptoms: Usually appear at 130fsw and prominent by 200fsw (4ATA) 1) Loss of judgement 2) False feeling of wellbeing 3) Lack of concern for job or safety 4) Apparent stupidity 5) Inappropriate laughter 6) Tingling and numbness of lips, gums, and legs Treatment: Bring to shallower depth 3-9.1
What can tending lines be made of?
Nylon, Dacron, Polypropylene 7-4.1.7
What specialty codes must a UMO have to modify treatment protocols?
Only UMOs with subspecialty codes 16UO (Basic Undersea Medical Officer) and 16U1 (Residency in Undersea Medicine trained Undersea Medical Officer) may modify the treatment protocols as warranted by the patient's condition with the concurrence of the CO or OIC 17-2.5.1
What are the two types of Vertigo?
Persistent: Inner Ear Barotrauma, DCS Type II Transient: Caloric - Temperature Alternobaric - Pressure 3-6.8, 3-7.1
What happens when a Poseidon regulator freeze up during ice diving?
Poseidon freezes in open position
When dealing with recompression who are the emergency consultation if needed?
Primary: Navy Experimental Diving Unit (NEDU) Secondary: Navy Diving Salvage and Training Center (NDSTC) Available 24 hours a day 17-2.8
How much buoyancy for BC?
Provide a minimum of 10 lbs positive buoyancy at max depth 7-3.4
Describe Pulmonary O2 Toxicity, the causes, symptoms, and treatments
Pulmonary O2 Toxicity can occur when the oxygen partial pressure exceeds .5ATA. A 12 Hour exposure to 1ATA will produce mild symptoms and decrease in lung function. A 4 Hour exposure to 2ATA will do the same as above Symptoms: Coughing, Pain in Lungs, Decrease in Lung Function Treatment: Remove from O2 Source 3-9.2
What does POIS stand for?
Pulmonary Over Inflation Syndrome
